./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 32caf91a957359107cc7ee97dff15a48767c1a44f043f2c3cd059b67296b8bad --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:52:16,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:52:16,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 09:52:16,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:52:16,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:52:16,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:52:16,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:52:16,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:52:16,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:52:16,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:52:16,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:52:16,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:52:16,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:52:16,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:52:16,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:52:16,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:52:16,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:52:16,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:52:16,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:52:16,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:52:16,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:52:16,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:52:16,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:52:16,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:52:16,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:52:16,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:52:16,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:52:16,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:52:16,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:52:16,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:52:16,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:52:16,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:52:16,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:52:16,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:52:16,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:52:16,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:52:16,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:52:16,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:52:16,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:52:16,458 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32caf91a957359107cc7ee97dff15a48767c1a44f043f2c3cd059b67296b8bad [2024-11-20 09:52:16,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:52:16,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:52:16,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:52:16,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:52:16,774 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:52:16,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2024-11-20 09:52:18,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:52:18,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:52:18,862 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2024-11-20 09:52:18,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16886c58d/b66cb76859804843bc1f2a6211308995/FLAGeced3a25b [2024-11-20 09:52:18,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16886c58d/b66cb76859804843bc1f2a6211308995 [2024-11-20 09:52:18,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:52:18,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:52:18,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:52:18,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:52:18,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:52:18,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:52:18" (1/1) ... [2024-11-20 09:52:18,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139706f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:18, skipping insertion in model container [2024-11-20 09:52:18,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:52:18" (1/1) ... [2024-11-20 09:52:19,056 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:52:19,354 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2024-11-20 09:52:19,363 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2024-11-20 09:52:20,109 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,111 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,112 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,113 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,114 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,131 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,134 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,137 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,138 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,141 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,142 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,143 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,144 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,523 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,535 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:52:20,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:52:20,650 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2024-11-20 09:52:20,651 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2024-11-20 09:52:20,710 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,711 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,711 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,712 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,712 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,727 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,728 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,729 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,729 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,730 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,730 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,731 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,731 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,790 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,797 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:52:20,807 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2024-11-20 09:52:20,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:52:21,125 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:52:21,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21 WrapperNode [2024-11-20 09:52:21,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:52:21,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:52:21,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:52:21,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:52:21,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,298 INFO L138 Inliner]: procedures = 679, calls = 1558, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 597 [2024-11-20 09:52:21,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:52:21,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:52:21,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:52:21,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:52:21,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,448 INFO L175 MemorySlicer]: Split 277 memory accesses to 5 slices as follows [2, 238, 6, 5, 26]. 86 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 6, 1, 5, 5]. The 238 writes are split as follows [0, 232, 1, 0, 5]. [2024-11-20 09:52:21,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:52:21,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:52:21,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:52:21,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:52:21,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (1/1) ... [2024-11-20 09:52:21,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:52:21,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:52:21,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:52:21,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:52:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-20 09:52:21,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-20 09:52:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 09:52:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-20 09:52:21,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-20 09:52:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-20 09:52:21,626 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-20 09:52:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-20 09:52:21,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-20 09:52:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-20 09:52:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-20 09:52:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-20 09:52:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-20 09:52:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 09:52:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-20 09:52:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-20 09:52:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 09:52:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 09:52:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:52:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:52:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:52:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-20 09:52:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-20 09:52:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-20 09:52:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-20 09:52:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 09:52:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 09:52:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-20 09:52:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-20 09:52:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 09:52:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-20 09:52:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-20 09:52:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-20 09:52:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-20 09:52:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-20 09:52:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-20 09:52:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-20 09:52:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:52:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:52:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 09:52:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 09:52:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 09:52:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:52:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:52:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 09:52:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 09:52:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 09:52:21,882 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:52:21,885 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:52:28,282 INFO L? ?]: Removed 87 outVars from TransFormulas that were not future-live. [2024-11-20 09:52:28,283 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:52:28,301 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:52:28,301 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 09:52:28,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:52:28 BoogieIcfgContainer [2024-11-20 09:52:28,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:52:28,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:52:28,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:52:28,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:52:28,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:52:18" (1/3) ... [2024-11-20 09:52:28,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3894476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:52:28, skipping insertion in model container [2024-11-20 09:52:28,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:52:21" (2/3) ... [2024-11-20 09:52:28,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3894476e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:52:28, skipping insertion in model container [2024-11-20 09:52:28,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:52:28" (3/3) ... [2024-11-20 09:52:28,315 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2024-11-20 09:52:28,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:52:28,333 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:52:28,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:52:28,420 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a6e34e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:52:28,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 09:52:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-20 09:52:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 09:52:28,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:52:28,441 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:52:28,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:52:28,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:52:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1052512289, now seen corresponding path program 1 times [2024-11-20 09:52:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:52:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797521453] [2024-11-20 09:52:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:52:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:52:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:52:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:52:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 09:52:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:52:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-20 09:52:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-20 09:52:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-20 09:52:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 09:52:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 09:52:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 09:52:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-20 09:52:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:52:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797521453] [2024-11-20 09:52:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797521453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:52:34,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:52:34,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:52:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401740970] [2024-11-20 09:52:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:52:34,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:52:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:52:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:52:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:52:34,688 INFO L87 Difference]: Start difference. First operand has 144 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 09:52:38,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:52:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 09:52:41,209 INFO L93 Difference]: Finished difference Result 281 states and 381 transitions. [2024-11-20 09:52:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:52:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2024-11-20 09:52:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 09:52:41,226 INFO L225 Difference]: With dead ends: 281 [2024-11-20 09:52:41,227 INFO L226 Difference]: Without dead ends: 142 [2024-11-20 09:52:41,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:52:41,235 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-20 09:52:41,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 159 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 105 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2024-11-20 09:52:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-20 09:52:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-20 09:52:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.188235294117647) internal successors, (101), 87 states have internal predecessors, (101), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-20 09:52:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2024-11-20 09:52:41,295 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 64 [2024-11-20 09:52:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 09:52:41,296 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2024-11-20 09:52:41,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 09:52:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2024-11-20 09:52:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-20 09:52:41,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:52:41,300 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:52:41,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:52:41,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:52:41,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:52:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1836148345, now seen corresponding path program 1 times [2024-11-20 09:52:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:52:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103899542] [2024-11-20 09:52:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:52:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:52:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:52:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:52:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 09:52:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:52:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-20 09:52:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-20 09:52:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-20 09:52:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 09:52:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 09:52:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 09:52:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:48,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 09:52:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-20 09:52:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:52:49,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103899542] [2024-11-20 09:52:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103899542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:52:49,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:52:49,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 09:52:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478251410] [2024-11-20 09:52:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:52:49,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:52:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:52:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:52:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:52:49,010 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-20 09:52:53,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:53:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 09:53:01,873 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2024-11-20 09:53:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:53:01,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 70 [2024-11-20 09:53:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 09:53:01,877 INFO L225 Difference]: With dead ends: 153 [2024-11-20 09:53:01,877 INFO L226 Difference]: Without dead ends: 151 [2024-11-20 09:53:01,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:53:01,879 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 138 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-20 09:53:01,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 270 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2024-11-20 09:53:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-20 09:53:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 142. [2024-11-20 09:53:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 91 states have internal predecessors, (104), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-20 09:53:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 176 transitions. [2024-11-20 09:53:01,899 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 176 transitions. Word has length 70 [2024-11-20 09:53:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 09:53:01,900 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 176 transitions. [2024-11-20 09:53:01,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-20 09:53:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 176 transitions. [2024-11-20 09:53:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-20 09:53:01,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:53:01,906 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:53:01,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:53:01,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:53:01,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:53:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1834301303, now seen corresponding path program 1 times [2024-11-20 09:53:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:53:01,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005318345] [2024-11-20 09:53:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:53:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:53:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:53:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:53:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 09:53:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:53:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-20 09:53:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-20 09:53:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-20 09:53:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 09:53:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:07,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 09:53:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:08,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 09:53:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:08,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 09:53:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-20 09:53:08,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:53:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005318345] [2024-11-20 09:53:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005318345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:53:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:53:08,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:53:08,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294862852] [2024-11-20 09:53:08,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:53:08,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:53:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:53:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:53:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:53:08,669 INFO L87 Difference]: Start difference. First operand 142 states and 176 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-20 09:53:12,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:53:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 09:53:19,918 INFO L93 Difference]: Finished difference Result 270 states and 332 transitions. [2024-11-20 09:53:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:53:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2024-11-20 09:53:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 09:53:19,921 INFO L225 Difference]: With dead ends: 270 [2024-11-20 09:53:19,921 INFO L226 Difference]: Without dead ends: 148 [2024-11-20 09:53:19,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:53:19,923 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 129 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 92 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-20 09:53:19,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 231 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 416 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2024-11-20 09:53:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-20 09:53:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2024-11-20 09:53:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 92 states have internal predecessors, (105), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-20 09:53:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 177 transitions. [2024-11-20 09:53:19,940 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 177 transitions. Word has length 70 [2024-11-20 09:53:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 09:53:19,941 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 177 transitions. [2024-11-20 09:53:19,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-20 09:53:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 177 transitions. [2024-11-20 09:53:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-20 09:53:19,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:53:19,943 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:53:19,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:53:19,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:53:19,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:53:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash -697824639, now seen corresponding path program 1 times [2024-11-20 09:53:19,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:53:19,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361732561] [2024-11-20 09:53:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:53:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:53:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:53:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:53:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 09:53:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:53:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-20 09:53:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-20 09:53:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-20 09:53:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 09:53:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:25,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 09:53:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:26,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-20 09:53:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:26,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 09:53:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:53:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-20 09:53:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:53:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361732561] [2024-11-20 09:53:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361732561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:53:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108315393] [2024-11-20 09:53:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:53:26,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:53:26,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:53:26,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:53:26,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process